1. Which planet is closest to the Sun?

2. What type of celestial body is the Sun?

3. What force keeps planets in orbit around the Sun?

4. What is the most abundant element in the universe?

5. Which scientist proposed the laws of motion?

6. What happens to a black hole as it emits Hawking Radiation over time?

7. Why is there no sound in the vacuum of outer space?

8. What type of storm is Jupiter's Great Red Spot?

9. The Equivalence Principle states that gravity is indistinguishable from what other phenomenon?

10. What is the approximate value of the Chandrasekhar Limit in terms of solar masses (M_Sun)?

11. What is the maximum mass a white dwarf can reach before it collapses?

12. What causes the phenomenon of 'spaghettification' near a black hole?

13. How does the Alcubierre Drive theoretically achieve faster-than-light travel?

14. Dark energy is estimated to make up approximately what percentage of the universe?

15. Which fundamental force keeps an atom's nucleus from flying apart?

16. What is the theoretical radiation emitted by black holes called?

17. A teaspoon of material from which celestial object would weigh roughly a billion tons?

18. What is the Kuiper Belt primarily composed of?

19. Claims about Nibiru are frequently associated with interpretations of which ancient civilization’s mythology?

20. What does the term “trans-Neptunian object” refer to?